Packaging Machine Sealing Device with Independent Force Control
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Solution Overview
Problem
Existing packaging machines face complexity in adjusting sealing pressure for different foil combinations, particularly in achieving an all-round sealing seam for airtight packaging and a stable flat seal, where the mechanical tuning is intricate and difficult to manage without affecting the sealing pressure of the sealed seam.
Innovation Solution
A packaging machine with a sealing device featuring two separate sealing tools, each with its own actuators for independent adjustment of sealing forces, allowing for separate control of sealing force, temperature, and time, enabling independent setting of sealing parameters for different seals without affecting each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical adjustment system is used to change sealing pressure for different foil combinations, then the sealing pressure can be adjusted for different seals, but the adjustment becomes very complex and difficult to manage
Solution Approach 1:
The sealing device is divided into multiple independent sealing units (first sealing unit, second sealing unit, third sealing unit) where each unit can be adjusted independently. This segmentation allows different sealing parameters to be set for different sealing locations without affecting other seals, thereby reducing the overall complexity of the adjustment system while maintaining high adaptability.
Solution Approach 2:
The sealing device incorporates dynamic adjustment capabilities where sealing parameters (pressure, temperature, time) can be changed independently for each sealing unit. This dynamic control system replaces complex mechanical tuning with more manageable independent adjustments, allowing operators to optimize each seal separately.
2Strength
If the sealing pressure for the flat seal is increased to provide stable hanging area, then the flat seal becomes more stable, but the sealing pressure of the sealed seam is affected
Solution Approach 1:
The sealing device separates the flat seal function from the circumferential sealing seam function into distinct sealing units. The second sealing unit is dedicated to creating the flat seal for hanging stability, while the first and third sealing units handle the circumferential sealing. This segmentation allows independent optimization of each seal's parameters without compromising the other.
Solution Approach 2:
Different sealing units are configured with different local properties (pressure, temperature, sealing surface characteristics) optimized for their specific function. The flat seal area receives higher pressure for stability, while the circumferential sealing areas maintain precise pressure control for seal integrity, allowing each region to have the quality it needs independently.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and easy adjustment of sealing forces for different packaging requirements, ensuring airtight circumferential seams and stable flat seals without impacting the sealing pressure of the sealed seam, thereby simplifying the packaging process.
Implementation Method 1
Actuators (26, 27) are provided for the sealing tools (22, 23), by means of which the sealing forces of the sealing tools can be adjusted individually
Implementation Method 2
the sealing force, the sealing temperature and/or the sealing time for the first and second seal can be set separately
Data Source
Figure 1
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AI summary
The invention relates to a packaging machine (1) with a sealing device (3), wherein the sealing device (3) comprises at least a first (24) and an individually controllable second sealing tool (25) for producing a first (11) and second seal (12) of a lower web (8) with a top web (10).